Die for making railway-chairs



(No Model.) 3 Sheets-Sheet 1.

B. B. ENTWISLE. DIE FOR MAKING RAILWAY CHAIRS.

Patentd Aug. 9, 1887.

M Fig.1.

Wfmesses N PETERS, PvmwLinw ra hnr, Wasllinglon, ac.

(No Model.) 3 Sheets-Sheet 2.

E. B. ENTWISLE. DIE FOR MAKING RAILWAY CHAIRS.

N0. 368,142. Patented Aug. 9, 1887.-

Witness as lxuserflov.

' (No Model.) a Sheets-Sheet a E. B. ENTWISLE.

DIE FOR MAKING RAILWAY CHAIRS. No. 368,142.- Patented Aug. 9, 1887.

K IHWMWII I kHkFIgZE. 'l rl Fi .7. Fig. 8 m Q UNITED STATES PATENT OFFICE.

EDYVARD B. ENTlVISLE, OF J OHNSTO\VN, PENNSYLVANIA, ASSIGNOR TO THE JOHNSON STEEL STREET RAlL COMPANY, OF KENTUCKY.

DIE FOR MAKING RAILWAY-CHAIRS.

SPECIFICATION forming part of Letters Patent No. 368,142, dated August 9, 1887.

(No model.)

To all whom it may concern:

Be it known that I, EDWARD B. ENTWISLE, of Johnstown, in the county of Cambria and State of Pennsylvania, have invented new and useful Dies for the l\[anuf-.icture of BoX-Ghai rs for Railroad-Rails, which invention is fully set forth and illustrated in the following specification and accompanying drawings.

The object of this invention is to manufacture the boxehairs herein described in dies by means of the drop-forge press,a weliknown view, respectively, wearing-plugs, which are let into the female die when bulb-chairs are to be forged. Fig. 6 shows in plan and side view, respectively, wearing-plugs slightly modified from those shown in Fig. 4., to be let into the female die when plain chairs are to be forged. Fig. 7 shows in plan arelnovable bottom plate for the female die when bulb-chairs are to be forged. Fig. 8 shows in plan,a removable bottom plate for the female die when plain chairs are to be forged. Fig. 9showsin perspective a bulb-chair after receiving the first stroke in the process of forging, and Fig. 10 shows in perspective a bulb-chair complete after undergoing the forging process.

In said figures the several parts are indicated by letters of reference, by means ofwhich the invention will now be described.

The letter A indicates the male die, a the finishing portion of said die, and D D the roughingout portion of said die.

B indicates the female die. The die A, as shown in the drawings,is the upper die, and the die B the lower die,- but, if desired, said dies can of course be reversed in the press.

0 indicates a bulb-chair in the dies, Fig. 2, as finished.

E E, Fig. 4, indicate removable punches in the male die, which form or drive out the chairlugs. Said punches are held in said die by means of bolts e. The removable bottom plate, F, Fig. 7, is held in the female die by the studs f, and is cut out at H H for the insertion of the removable plugs K, Fig. 5.

In Fig. Sis illustrated a removable plate, a modification of that shown in Fig. 7, cutout for the insertion of the removable plugs L, (shown in Fig. 6,) which plate and plugs are substituted, as hereinbefore explained, for those shown in Figs. 5 and 7, where a plain chair is to be forged instead of a bulb-chair The letters G G indicate removable side plates in the female die held by bolts or studs gg. Said side plates are grooved out, as shown at M M, Figs. 1 and 2, if bulb-chairs are to be forged; but if plain chairs are to be forged, one set of plugs, as shown in Fig. 8, and all the side grooving shown in Figs. 1 and 2 can be dispensed with. The removable plugs L, Fig. 6, are also slightly altered from the shape of the plugs K, Fig. 5, to suit the reduced thickness of the lug portion of the chair when plain chairs are to be forged. The method of manufacture is thus in principle the same, the only difference being in these minor details, for the purposes stated.

As illustrated in Fig. 9, (which shows a bulb-chair,) as hereinbefore stated, the first stroke of the press squares the base and two sidesor side posts of the chair and partly anglesits feet or flange; but said stroke does not stamp out the lugs of the chair. The second or finishing stroke squares the feet or flanges of the chair and drives out its lugs, as shown at Z, Fig. 10. This order of action saves overstraining of the metal and reduces largely the wear on the dies. This said method is preferable, although it is not impossible to form the whole chair by one stroke in dies shaped entirely like the finishing part a of the male die and like that part of the bottom die necessary to complete the shape of the chair; or, if it be desired, the two parts a andD of the male die can be made in two separate pieces, forming two dies, instead of one. The sides of the dies are made to taper, as is illustrated in the drawings. This tapering is important,

as it permits the surface action ordrawing action over the whole surface of the sides of the metal forming the chair, which action could not be obtained if the sides of the dies were vertical and therefore in direct line with the axis of the blow. The entire removability of the wearing parts of the dies not only permits of cheaply repairing the several portions which may become worn, some parts wearing more quickly than others, but also permits of more economical construction of the different parts, though of course removabilityof parts is not necessary to the process of forging, but only relates to greater practicability and cheapness. I

The dies herein described can be used in any of the ordinary steam or other power presses.

I herein make no claim, as an article of manufacture, to the form of box-chair herein described as being of my invention.

Having thus fully described my dies for the forging of box-chairs, as of my invention I claim- 1. A male and female die for the forging of box-chairs, substantially of the shapes described, provided each with beveled sides, substantially as and for the purposes set forth.

2. A female die for the forging of boxchairs, provided with a removable bottom E E, substantially as and plate for modifying the surface form of the chair, substantially as and for the purposes set forth.

8. A female die for the forging of boxchairs, provided with removable side plates, substantially as and for the purposes set forth.

4. A female die for the forging of boxchairs, provided with removable bottom plugs for modifying the surface form of the chair, substantially as and for the purposes set forth.

5. A female die for the forging of boxchairs, provided ,with side grooves, as M M, substantially as and for the purposes set forth. 6. A male die for the forging of box-. chairs, provided with removable punches, as for the purposes set forth.

7. A male die for the forging of boxchairs, having the conformation shown, as at a and D, whereby a twopart drawing action is produced upon the metal, substantially as and for the purposes set forth.

\ EDWARD B. ENTWISLE. \VitneSSes:

W. MILT. BROWN, GOWER VVAL'rERs. 

